Lock.



UNITED STATES- Patented October l1, 1904.

PATENT OFFICE.

LOCK.

SPECIFICATION forming' part of Letters Patent No. 772,112, dated October 11, 1904.

Application filed March 29, 1904.

T a/ZZ whom, it may concern:

Be it known that I, JULIUs OLEscHAK, a citi- Zen of the United States,'residing at -Philadelphia,in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Locks, of which the following is a specification.

My invention relates to that class of locks in which the bolt is operated by means of a rotary cylinder containing a series of transverse tumblers which are adapted to lock the cylinder by the engagement ot' the ends of the tumblers with slotted openings in an outer cylinder or casing.

The object ot' my invention is to improve the construction of this class ot' locks by making the tumblers more reliable in their operation, and by adapting in a single lock both the Hat andcylindrical forms of tumblers I am able to produce a lock which is extremely diiiicult to manipulate without the use of a properly-fitted key.

' The nature of my improvements will be more fully understood by reference to the accompanying drawings, forming part of this specitication, in which- Figure 1 represents a perspective view of lock embodying my improvements. Fig. 2 illustrates a vertical section taken transversely through the cylinders on a line 2 2 of Figs. l and 4, showing the construction and arrangement oi' the flat tumblers. Fig. 3 showsl a similar section cut transversely through the base ot' the lock on a line 3 3 of Fig. 4, illustrating the construction and arrangement of the cylindrical tumblers. Fig. 5 illustrates a detached perspective view ot' two of the flat tumblers, showing the manner in which they are arranged with respect to each other when placed in the tumbler-cylinder; and Fig. 6 is a detachedperspective view ot' a washer used on either side ot' the bank ot' tumblers.

Referring to the several parts of the drawings by letters. A represents the shell or casing of the lock, to which is fastened a cylinder A', provided with slotted openingsa a to re- `ceive the ends oi' a series of tlat tumblers.

A2 isa disk-shaped enlargement formed at the base of the cylinder A', containing the cylindrical tumblers and serving as a ange Serial No. 200,504. (No model.)

for screws a a, by which the portion A is united to the cylinder A'.

B is a rotary cylinder containing a series oi' flat tumblers C and slotted at B B to receive the projecting ends of these tumblers.

D D are slotted washers arranged within the cylinder B at the opposite ends of the bank of fiat tumblers.

The tumblers C are provided with oppositely-disposed tongues C', which rest in the slotted openings B' ot' the cylinder B and which are caused to project beyond and into the slotted openings a of the cylinder A by means ot' spiral springs s. These springs abut at one end against the wall of the cylinder B and at the other against projections c, formed upon the sides ot' the tumblers. As shown in Fig. 5, the adjacent tumblers C are springpressed in opposite directionswthat is to say, the first tumbler is pressed downward by its spring, while the next in order is pressed upward, and, moreover, while the spring on the tirst tumbler is located at the lett ot' the tumbler the next in order is located to the right. The object of this arrangement is, first, to permit the use of a key having unlike undulating sides and, secondly, to confine the springs in place by shoulders c', formed on the sides of the tumblers, which will, when arranged in opposition in the series, form side walls to conne the springs in their respective places. At the front and rear ot the bank of tumblers the rounded sides ot' the washers D serve the purpose of the shoulders on the tumblers C.

At the base of the cylinder A, at which v locked by the outer portions of the tumblers` crossing the dividing-line between the cylinders A and B; but with the key K in place, as shown in Fig. 4, the dividing-line ot tumblers and cylinders will coincide and the cylinder B may be turned.

In the rear of the cylinder Bis a plug F,

IOO

ed to move the bolt when the cylinder B is rotated.

Having described my invention, what I claim, and desire to secure 'by Letters Patent,

l. A lock comprising a fixed cylinder and a movable cylinder, a series of tumblers Varranged side by side Within the movable cylinder, a spiral spring acting upon each of the tumblers to press it beyond the limits of the movable cylinder and into engagement with the fixed cylinder, and a shoulder formed upon the sides of the tumblers to retain the adjacent springs in position, substantially as speciiied.

2. A lock comprising a fixed cylinder and a movable cylinder, a series of tumblers in frictional Contact with each other Within the movable cylinder, a spring acting upon each of the tumblers to press it from the movable cylinder into the fixed cylinder and projections formed upon opposite sides of each of the tumblers one of which is adapted to engage the end of the spring and the other to retain the adjacent springs in position, substantially as specified.

3. A lock comprising a fixed cylinder and a movable cylinder, a series of tumblers arranged side by side within the movable cylinder, a spring acting upon each of the tumblers to press the same into engagement with the xed cylinder, a shoulder formed upon the sides of the tumblers to inclose and retain 4the adjacent springs in position and two-part cylindrical tumblers adapted to traverse openings in the xed and movable cylinders, substantially as described.

4:. A lock comprising a series of iiat tumblers slotted to receive a key, a cylinder inclosing the same slotted to receive the ends of the tumblers, a spiral spring interposed between each of the tumblers and the cylinder, a slotted cylinder surrounding the first-mentioned cylinder and a two-part cylindrical tumbler, the members of which are guided in openings formed in the inner and outer cylinders so that the abutting ends of the tumbler will coincide with the dividing-line of theicylinders when a liey is inserted, substantially as specified.

In testimony whereof I alix my signature in presence of two witnesses.

' JULIUS OLESCHAK.

Witnesses:

DAVID S. WILLIAMS, ARNOLD KATZ. 

